Dyno Runs
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From: West Palm Beach Florida
Re: Dyno Runs
Originally Posted by Lasombra52
Well I'm believing that something is wrong with the car as well.
A4's due suck a bit more out of the HP, but not enough to justify your numbers.
You said 84,000 miles. Have you changed your spark plugs? Gone over your wires? Maybe the gas lines are clogged a bit, have you run any injector cleaner lately? How's the air Filter?
In my opinion something doesn't sound right. Very low numbers for a 97 Z28, even on a Mustang Dyno.
Let me know what the like is for your dyno once you scan it. Maybe that will help tell what is going on.
What Torque #'s did you put down?
A4's due suck a bit more out of the HP, but not enough to justify your numbers.
You said 84,000 miles. Have you changed your spark plugs? Gone over your wires? Maybe the gas lines are clogged a bit, have you run any injector cleaner lately? How's the air Filter?
In my opinion something doesn't sound right. Very low numbers for a 97 Z28, even on a Mustang Dyno.
Let me know what the like is for your dyno once you scan it. Maybe that will help tell what is going on.
What Torque #'s did you put down?
http://pg.photos.yahoo.com/ph/crazyp...00.jpg&.src=ph
New air filter I change my fuel filter once a year my spark plugs have probably like 15k on them double plat AC.
Wires are new replace them last year.
Stock GM's long storey.
I run a bottle of injector cleaner once a year and I also use a intake cleaner that goes into the engine through a I.V bottle.
She may be bone stock but I do take good care of her.
Let me know.
Thanks,
Chris G.
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Joined: Dec 2003
Posts: 501
Re: Dyno Runs
where is your A/F graph? got any SES lights? car acting funny? what kind of gas mileage you gettin?
even the torque is WAY off. i would suggest if there is another dyno day soon at a different shop, you go to that other shop and if it gives similar results, begin to hunt down issues. there have been instances where i have seen dyno reading go 40-50rwhp off, but they are far and few between...but not unheard of.
even the torque is WAY off. i would suggest if there is another dyno day soon at a different shop, you go to that other shop and if it gives similar results, begin to hunt down issues. there have been instances where i have seen dyno reading go 40-50rwhp off, but they are far and few between...but not unheard of.
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Joined: May 2004
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From: West Palm Beach Florida
Re: Dyno Runs
Originally Posted by Sneakin Deacon
where is your A/F graph? got any SES lights? car acting funny? what kind of gas mileage you gettin?
even the torque is WAY off. i would suggest if there is another dyno day soon at a different shop, you go to that other shop and if it gives similar results, begin to hunt down issues. there have been instances where i have seen dyno reading go 40-50rwhp off, but they are far and few between...but not unheard of.
even the torque is WAY off. i would suggest if there is another dyno day soon at a different shop, you go to that other shop and if it gives similar results, begin to hunt down issues. there have been instances where i have seen dyno reading go 40-50rwhp off, but they are far and few between...but not unheard of.
I'm getting about 18MPG driving around town.
Car runs fine no problems at all.
No A/F graph I did not see a point in having it.
Well he did put in for 26inch tires witch is a little off maybe that's where some of the hp loose is?
I have a program that does the calculations and it comes out to a 25.6456692913386 for my 245/50/16's
Thanks,
Chris G.
Last edited by crazypurgatory; Oct 20, 2005 at 09:10 PM.
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Joined: Dec 2003
Posts: 501
Re: Dyno Runs
26" is fine.
18mpg is normal. the A/F graph would have shown some issues though. there is a reason your making 50rwhp less than an average LT1.
also your curve is erratic, i would take a little mist bottle and at night pop your hood and let the car run, and just give a couple sprays on both side of the motor near the plugs...
18mpg is normal. the A/F graph would have shown some issues though. there is a reason your making 50rwhp less than an average LT1.
also your curve is erratic, i would take a little mist bottle and at night pop your hood and let the car run, and just give a couple sprays on both side of the motor near the plugs...
Thread Starter
Registered User
Joined: May 2004
Posts: 938
From: West Palm Beach Florida
Re: Dyno Runs
Originally Posted by Sneakin Deacon
26" is fine.
18mpg is normal. the A/F graph would have shown some issues though. there is a reason your making 50rwhp less than an average LT1.
also your curve is erratic, i would take a little mist bottle and at night pop your hood and let the car run, and just give a couple sprays on both side of the motor near the plugs...
18mpg is normal. the A/F graph would have shown some issues though. there is a reason your making 50rwhp less than an average LT1.
also your curve is erratic, i would take a little mist bottle and at night pop your hood and let the car run, and just give a couple sprays on both side of the motor near the plugs...
Chris G.
Thread Starter
Registered User
Joined: May 2004
Posts: 938
From: West Palm Beach Florida
Re: Dyno Runs
Originally Posted by Joe 1320
If you aren't noticing a miss, the first thing I would do is a few ¼ mile runs. The trap speed will tell you if it jives with the dyno. 
I can try that too it's been a while scince I went to Moroso.
thanks,
Chris G.
Thread Starter
Registered User
Joined: May 2004
Posts: 938
From: West Palm Beach Florida
Re: Dyno Runs
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